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Finding the Fourth Proportional to 3,866.03, 5,337.34 and 2,688.69

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Solution

The fourth proportional to 3,866.03, 5,337.34 and 2,688.69 is: 3,711.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.03 : 5,337.34 = 2,688.69 : x
  2. Step 2: Convert to fraction form
    3,866.03/5,337.34 = 2,688.69/x
  3. Step 3: Cross multiply
    3,866.03x = 5,337.34 × 2,688.69
  4. Step 4: Simplify right side
    3,866.03x = 14,350,481.10
  5. Step 5: Solve for x
    x = 14,350,481.10/3,866.03
  6. Step 6: Final answer
    x = 3,711.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.